Siemens QF240AH GFCI Miniature Circuit Breaker
- 40A
- 2 Pole
- Plug-On
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Siemens QF240AH - 40A GFCI Miniature Circuit Breaker
New
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Description
Part of the Siemens QP family, the QF240AH delivers high-capacity ground fault protection with a 22kAIC interrupting rating at 120/240VAC. This 2-pole, 40-amp GFCI breaker features an automated self-test and lockout mechanism to ensure reliable 5mA Class A protection over its lifespan. Equipped with a pigtail neutral, it is compatible with Siemens EQ, PL, and ES series load centers. This specific model has been superseded by the Q240GFH for newer installations.Specifications
| Brand | Siemens |
|---|---|
| Series | QF |
| Amperage | 40A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens EQ, EQL, SEQ, EQG, PL, ES Load Centers |
| Wire Gauge | 8-6 AWG (Cu), 8-4 AWG (Al) |
| Max Wire | 6 AWG (Cu), 4 AWG (Al) |
| Min Wire | 8 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LIG |
| Trip Function | Long-Time, Instantaneous, Ground Fault |
| Trip Adjustability | Fixed |
| Special Classification | GFCI |
|---|---|
| Available Options | Padlock Attachment |
| Accessories | Pigtail Neutral |
| Standards | CSA C22.2 No. 144, UL 489, UL 943 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Self-Test, High Interrupting Capacity, Common Trip |
Product FAQs
8 answersWhat level of ground fault protection does the QF240AH provide?
It provides Class A personnel protection, which is designed to trip when a ground fault current of 4 to 6 milliamps (typically rated at 5mA) is detected.
What does the H in the QF240AH catalog number indicate?
The H designates a high interrupting rating of 22kAIC. The standard version without the H suffix (QF240) has a 10kAIC rating.
What is the standard interrupting rating equivalent for this breaker?
The standard 10kAIC version of this 40A GFCI breaker is the Siemens QF240.
Can the QF240AH be installed in older ITE load centers?
Yes, Siemens QP family breakers are backward compatible with older ITE load centers that accept plug-on Q-frame breakers.
How is the neutral connection wired on this breaker?
This breaker features a pigtail neutral wire. The pigtail must be connected directly to the neutral bus bar in the load center to ensure the ground fault circuitry functions correctly.
Is this breaker compatible with Siemens plug-on neutral load centers?
Yes. While it is a pigtail neutral breaker, it is UL listed for use in Siemens plug-on neutral (PON) load centers. The pigtail must be manually wired to the neutral bar.
Does this breaker include a self-test feature?
Yes, it includes an automated self-test and lockout mechanism as required by UL 943. If the breaker detects that the GFCI protection has been compromised, it will trip and lock out to prevent unsafe operation.
Can this breaker be used for spa or hot tub applications?
Yes, a 40A Class A GFCI breaker is commonly used to provide the required 5mA ground fault protection for spas, hot tubs, and other wet-location applications.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 22 reviews.
- TSTHOMAS S.Verified BuyerReviewingSiemens QF220 - 20A GFCI Miniature Circuit BreakerI do not recommend this productRated 2 out of 5 stars3/30/26Double check correct version
I received the Q220”A” version. Superbreaker was easy to work with for a return.
- KHKarmen H.ReviewingSiemens QF120A - 20A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/31/23Very happy
I am a small contractor in MN and when I get to the hard to find or not readily available in out are I always turn to SuperBreakers, for great selection and quick shipping.
- KHKarmen H.ReviewingSiemens QF115A - 15A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/31/23Breaker
I am a small contractor in MN and when I get to the hard to find or not readily available in out are I always turn to SuperBreakers, for great selection and quick shipping.
- JHJeff H.ReviewingSiemens QF120AN - 20A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars1/26/23all good
all good
- DBDean B.ReviewingSiemens QF130 - 30A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/25/22Master Electrician
Lets me keep this short and simple.. Order from Super Breakers and you won’t be disappointed!!
Thank you for your business Super Breakers!